Core/Misc: Fix a compile warning.

Properly fix #11229 since eacf961e7299afc0627e146d204d94baa1a09d80 changes didn't affect the original issue.
Core/Transports: Fix triggered assertion in Transports

Relocate only Players in world when updating transport's and its passengers' positions.
Thanks vlad852 .
Closes #11209 .
Scripts/PoS: fix Tyrannus Overlord Brand thx @zwerg
Core/Transports: addition to f0c4d0ac05eee967ebe9322e0f362b7f5d1088a4
Core/Players: fix logic in Player::SendInitWorldStates()
Core/Movement: fix player fall under ground on teleport
Instance/Halls of Reflection/Lich King event: Implement loot chest in heroic mode and rename chest variables.
Merge pull request #11250 from xjose93/HoR

Instance/Halls of Reflection/Lich King event: Implement loot chest in heroic mode and rename chest variables.
Scripting/Eversong_Woods: Add quest end scripting for quest 8487.
Also fixes for quest 8488 but not completely fixed.
Scriting/Eversong Woods: Minor fix.
Core/Player: Allow questgiver, if npc, to cast quest RewSpellCast & RewSpell rather than player.
DB/SAI: Fix Quest 13145 "The Vile Hold"
Closes #7799
Core/QuestPOI: Replace Unk2 with FloorId
Merge pull request #5 from TrinityCore/master

MERGING again  :D